Fuel-saving device



Jan. .29 1924.

G. VAN DAAM FUEL SAVING DEVICE Filed Feb. '7, 1922 lhzfie "for; Gerri? 7571/1206:

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Patented Jan. 29, 1924 UNITED STATES 1.4s2,104- PATENT oFFrcE.

GERRIT VAN DAAM, or Berri/ ino, NEW YORK,

FUEL-SAVING nnvroni 1 Application filed February 7, 1922. Serial No. 5343673.

1' all whom it may concern:

Be it'known that I, GERRIT VANDAAM, a citizen of the United States, residing at Buffalo, in the county of Erie, State of New York, have invented a new and useful Fuelover the fuel bed, so that said fresh air shall Q. not chill or damp the fire, and so that the combustion of the gases rising from the fuel bed shall be more completely accomplished.

The special feature of the invention is the improved structures whereby a maximum efficiency is attained by a device occupying minimumof space, and simple in construction.

By my improved means I. am also able to vary the heating spaces and areas, be-

tween the intake and discharge, to suit dif ferent conditions.

Referring to the drawings which illustrate, merely by way ofexam'ple, suitable means for effecting my invention Fig. 1 is a view in perspective of a furnace with my improved device. applied thereto.

Fig. 2 is a side elevation of the device on an enlarged scale.

Fig. 3 is a longitudinal vertical section of same.

Fig. dis a longitudinal vertical section of amodification.

Fig. 5 is a similar View of a single unit or section of a heating device made up of a plurality of units or sections.

Similar numerals refer to similar parts throughout the several views.

In its simplest form, my improved device for delivering heated air to the combustion chamber comprises two chambered bodies as shown in Figs. 1, 2 and 3. The chambered body 6 is semispherical in form having its flat wall 7 adapted to lie against the inner wall of the furnace, or the furnace door 8 as: shown in Fig. 1. This inner wall.

7 is provided with a central opening having an interior flange or collar 9. This opening is provided With an interior thread to cooperate with the thread of the air intake tube 10. This tube extends through the wall or door of the furnace and is preferably periphery thereof.

held in place by the nut 11 and is provided at its outer end with a flaring mouth piece 12 having thevusual damper 13 operated by means of the lug 14 or other suitable means. The inner end of tube '10 is also provided with the lock nut 15 for locking against the flange or collar 9. Upon the other side of chambered body 6 is providedthe nozzle opening 16 interiorly threaded to cooperate with one end of the connecting ,pi'pe17; the other end of said pipe may either be integral with, or threaded into, the chamberedbod-y 18, which in the presentexample, is shown as substantially spherical. The inner side of body 18 is provided with the dischargenok zle 19, which again may be integral therewith or threaded into the body 18 asshown. This nozzle. 19 is provided with the discharge vents- 20. Within the chambered bodies 6 and 18 are provided a plurality of pins or projections 21. In chamber 6 these projections are shown as extending} toward the flat wall 7 of the. chambered body; while in the chambered body 18 the pins 21 are shown as extending toward the axis of the chamber from all parts of the shown in the connecting pipe 17.

In operation: lVhen the device is mounted as shown in Fig. 1 and the door 8 is closed,

the damper 13 maybe kept closed or nearly closed until the device becomes heated by the fire within the combustionchamber. A the heat communicated to the device increases, the amount of air permitted to pass through it may be correspondingly increased wlthout danger of damping or checking the fire. The peculiar construction of chamber. 6 with its semi-spherical wall toward the fire gives a maxinmm of" heating area exposedto the lire. The projecting pins 21 increase the amount of heat comniunicated from the walls of chamber 6 to the air passing from pipe 10 to pipe 17 The air flowing into the chambered body 6 naturally becomes expanded by the heat communicated to it, and it is then to a certain degree compressed as it is drawn through. the narrower channel of pipe 17. As the air passes through this pipe 17 in contact with the several projecting pins 21, further heat is absorbed. Passing into chambered body 18, the air is again expanded and further heated by the spherical walls of body 18 and the pins 21 extending inwardly therefrom. From this chamber Similar pins are also.

[ cal body 6, andthe spherical body 16, connected by the neck 17, presents a maximum of surface exposed to the heat of the fuel bed, so that by the combined means shown a maximum quantity of air may be drawn through the device into the combustion chamber at a temperature suiiiciently high to prevent any damping or chilling of the fire. As the parts can all be made separately and threaded together it forms an extremely simple and inexpensive structure to make and to repair.

In Fig. 6 is shown a modification which comprises the interposition between the chambered bodies 6 and 18 of additional chambered bodies such as 22 and 23. These several chambered bodies may be of varying shapes as shown, depending upon the conditions under which the same are sought to be used. These several bodies are connected by similar short pipes, such as 24k and 25. In these chambers 22 and 23, I have shown baffles such as 26 and 27. These baffles consist in substantially round flat plates of less diameter, than that of the chambers. They are supported in any suitable way, as by rods 28 and 29, so that the air, passing from one connecting pipe, such as 1.7, to the next connecting pipe, such as 24, first strikes the baffle 26 and is forced to pass around the margin thereof so that it will have closer contact with the surrounding walls of the chamber. In the modification shown in Fig. l, I have shown the discharge vents around the periphery of the nozzle 19 as well as in its face.

In Fig. 5, I have shown a single unit or chamber 30 adapted to be connected up with other similar units. I have shown in this unit a baffle 81 having slightly curved faces to facilitate the flow to the outer iieriphery thereof.

It will be obvious that with the arrangement indicated, it is possible to lengthen or shorten the complete device by including further chambered elements such as 22 and 23, or by eliminating one or more of them to suit the nature of the furnace or combustion chamber with which it is to be used, and thus it is possible to adapt the device to almost any form of standard furnace.

What I claim is:

1. In a fuel saving device, the combination of two communicating chambered bodies having axes on the same horizontal line, one of substantially semi-spherical formation, having a fiat wall adapted to lie adjacent an inner Wall of the furnace, and adapted to receive air from outside the furnace, the other of substantially spherical formation adapted to discharge air into the combustion space of the furnace and a pipe formation threaded throughout its extent I for connecting said chambered bodies, having 1fingers extending radially from its inner wa l 2. In a fuel saving device, the combination of two communicating chambered bodies having axes on the same horizontal line, one of substantially semi spherical formation, having a fiat wall adapted to lie adjacent an inner wall of the furnace, and adapted to receive air from outside the furnace, the other of substantially spherical formation adapted to discharge air into the combustion space of the furnace, said semispherical chamber having a plurality of substantially parallel tapered fingers projecting from its inner semi-spherical wall toward its flat wall.

3. In a fuel saving device, the combination of two communicating chambered bodies having axes on the same horizontal line, one of substantially semi-spherical formation, having a fiat wall adapted to lie adjacent an inner wall of the furnace, and adapted to receive air from outside the furnace, the other of substantially spherical formation adapted to discharge air into the combustion space of the furnace, said spherical chamber havin a. plurality of substantially parallel tapered fingers projecting from its inner wall at right angles to the horizontal axis.

GEEK-IT VAN DAAM. 

